David A.Duff, beloved husband of Tonya Addis Duff. Devoted father of Sierra (Charlie) Sammons, Davona, David Jr., Grayson (Charlene) Duff and Tabitha Flynn. Dear son of Linda Radtke and the late David Duff.Dear brother of Jason Duff and Tommy Radtke. Grandfather of Courtney, Kelsey, Charlie, Ryleigh, Robbie, Ronnie, Tava, Preston and Weston. Passed away suddenly on Sunday, June 2, 2013, at the age of 47 years. Friends may call at the Miller-Busse & Borgmann Funeral Home, 3464 Central Parkway at Clifton Hills Avenue (Clifton) on Monday from 5:00 until 8:00 PM, and on Tuesday from 11:00 AM until time of funeral services at 12:00 noon.